Fastening device



A. VASSELLI.

FASTENING DEVICE.

APPLICATION men FEB. 9. 1918.

1,328,064, Patented Jan. 13,1920.

J 7z1/antor- UNITED STATES PATENT OFFICE;

ANTHONY VASSELLI, OF NEWARK, NEW J ER-SEY, ASSIGNOR, BY MESN'E ASSIGNMENTS,

. TO HARRIMAN NATIONAL BANK OF THE CITY OF NEW YORK.

FASTENING DEVICE.

Specification of Letters Patent.

Patented Jan. 13, 1920.

Application filed February 9, 1918. Serial No. 216,340.

To all whom it may concern:

.Be it known that I, ANTHONY VAssELLI, a citizen of the United States, and a resident of the city of Newark, county of Essex, and State of New Jersey, have invented a certain new and useful Improvement in Fastening Devices, of which the following is a specification.

My invention relates to fastening devices for securing shafts, spindles, mandrels and axles in position against axial movement, and for securing other devices to shafts, spindles, mandrels and axles against axial movement thereon.

The invention contemplates the provision of means for supporting, retaining, and fastening mechanism, of the character herein described, which is extremely simple in construction, thoroughly reliable and efiicient in its purpose. and economical and inexpensive to manufacture.

'A further object of the invention is the provision of means which will securely hold, support and retain the parts in proper position on the structure, and effectively prevent accidental displacement or dislodgment of the same.

Further object of my invention are to provide means for preventing axial movement of certain devices wherein drilling and tapping will be avoided, and the employ ment of pins, cotters, screws and the like will be eliminated, and which will be simple and cheap of construction. will securely hold the parts in proper position. which cannot become dislodged. and whichmay be readily removed when desired.

WVith these and other obiects in view to be more fully set forth hereinafter, the invention consists in the novel construction and combination of elements, and arrangement of part which will be exemplified in the construction hereinafter described in the spe ification and illustrated in the accompanying drawings considered together or separately.

I have illustrated my invention in connection with parts of a spring motor for talking machines, but I desire to have it understood that the same may be employed in other devices. It may in fact be employed in. any situation where it is desired to prevent axial movement-of a shaft or the like, or to prevent axial movement of other devices longitudinally of a shaft.

In talking machine motors not utilizin my invention, the turn-table shaft is stepped in the lower plate or the lower member of the motor frame, and projects upward through the upper frame member and through the board which carries the motor. It is the present practice to place a collar or ring on the shaft below the top plate, and secure the same to the shaft and in position engaging the bottom of the plate by means of a set screw. In operation the set screw frequently works loose, and the collar will fall. This will permit the shaft to move vertically and frequently results in completely wrecking and destroying the mechanism.

The brake shaft ofa talking machine is usually a vertical shaft journaled in a single bearing in the top plate of the motor frame. This shaft carries at its lower end a brake shoe, and at its upper end, means for manually. manipulating the same. A coiled spring is provided to frictionally secure the shaft against rotation. This spring in the present construction, rests upon a collar secured to the shaft by means of a pin. The spring is compressed between the collar and the bottom of the bearing. A similar collar is secured to the shaft by a pin, said collar resting upon the top of the motor frame late. p In the manufacture, it is difiicult to drill the pin holes diametrically through the center of the shaft and collar. If the holes in the collar and shaft are not exactly in line, the pin cannot be in position without bending the same. If the pin be bent, it will be weakened and likely to break. If the pin does not properly fit in the holes, it will fall out. The drills employed to make the holes are of small size, and the breakage is large. The holes vary in size, and it is almo t impossible to get stock pins to fit them.

By employing and utilizing my invention, the difficulties here mentioned are eliminated, and a more satisfactory and efficient structure is obtained.

The inventive idea involved is capable of receiving a variety of mechanical expressions, one of which for the purpose of illustrating the invention, is shown in the accompanying drawings.

The invention will be first described in connection with the accompanying drawings illustrating one embodment of my invention,

wherein similar reference characters are used to designate corresponding parts throughout the several views, and then more specifically defined and indicated in the appended claims, and in which drawings Figure 1 is a side elevation partly in section of a portion of a talking machine motor A turn-table shaft 4 is provided with a reduced portion 5, the same being stepped in the plate 2', and with a pinion 6, meshing with the spur gear 3, for the purpose of rotating-said. shaft. The shaft carries the usual worm wheel 7 engaging a Worm 7 on the governor shaft 8, carrying a brake disk 9. The top plate 1 is provided with a bossxlO within which the shaft 4 is journaled. 7

Immediately below-the lower face of the boss 10, a peripheral groove 11 is turned in the shaft. A disk '12having-a radial slot 12. is provided. The slot is of a diameter sufiicient to slide in the groove 11, and when in position the disk forms a collar on the shaft.

A keeper or cup 13, formed of a flanged disk and having a perforation 13 of a diameter sufficient to permit of movement of the cup over the shaft, is positioned over the top of the disk 12 with the flange of the cupsurrounding the periphery of the disk. When the shaft is positioned in the frame, the cup. will'bear against the lower face of the boss 10, and the shaft 4 is securely held in position between the plates 1 and 2.

The type of spring motor in connection with which my invention is illustrated, is

rovided with a manually operated brake.

his brake comprises a vertical brake shaft 14 which extends through the top plate 1. The lower end of'the shaft carries an arm 15, provided with a brake shoe '16, cooperating with the periphery of the brake disk 9, and when applied tothe disk will arrest the movement of the governor shaft, turn-table shaftvand motor, as is common. The shaft 14 has its only bearing in a boss 17 on the topplate '1. i

A spring 18 surrounds the shaft 14 and bears against the lower face of the boss. The spring is compressed against the boss by means of a cup 21, and a slotted disk 19, which are supported by the engagement of the latter in a peripheral'groove 20 in the shaft 14. V 1

The peripheral groove 20 is turned in the shaft 14 the same as on the turntable shaft 4. The cup 21 and the slotted disk '19 are likewise the same as the cup 13 and the disk 12 on the turn-table shaft.

The expansion of the spring is prevented by a similar cup 24 and key disk 23 which ar positioned on top of the plate 1 in a peripheral groove 22 in the shaft 14. The relative positions of the key disk 23 and cup 24 are the reverse of the disks 19 and 12 and cups l3 and 21 before described. The shaft 14 is securely retained in position, and the friction produced by the spring Wlll retain the shaft in the position to which it may be turned. The upper end of the brake shaft is provided with means 25 by which it may be rotated.

The key disks and cup may be placed in position more readily than pinned or set screwed collars. They cannot work loose as is the case with set screws, and they cannot become bent, sheared ofi, or worked out as is the case with pins or cotters. In. situations similar to those shown in connection with the disks and cups 12, 13 and 19, 21, the parts may be assembled before the shafts are placed in position.

In dismantling the apparatus,the'disks andcups may be removed more easily than can pins, cotters or screws.

It will be understood that instead of employing the grooves, such as 11, 20 and 22, the shafts may be of various shapes at those points; it being only necessary that the shafts shall be of reduced diameter at those points, and that the slots in the key disks too, of a size to freely fit such portions.

Another advantage of my invention is that the key disk may be utilized to rotate independent of the disk cup, and its supporting means, and in such instance the disk cup acts as a bearing in any case wherein such independent rotation might be desirable; the slotted disk cup is also available for use as a device to hold grease, or as a place through which to apply other lubricant; but I desire to have it understood that I do not so limit my invention, and that in the structure shown no such independent rotation is contemplated.

In accordance with the provisions of the patent statute, I have described the principle of my invention together with the apparatus which I now consider to represent the best embodiment thereof. but I desire it understood that my invention is not confined to the particular form of apparatus herein shown and described. the same being merely illustrative, and that the invention can be carried out in other ways without departing from the spirit of my in ention, and. therefore, I claim broadly the right to employ all equivalent instrumentalities coming withinthe scope of the appended the like, a motor frame, a brake shaft rotatably mountedin and projecting above said frame and provided with a circumferential groove near its upper end adjacent to the upper side of said frame, a slotted disk fitted in said groove, a flanged washer fitted upon said shaft and located between said disk and the upper side of said frame and its flange encircling said disk to hold said disk in place, a' circumferential groove in said shaft below said frame, a slotted disk fitted in said groove, a flanged washer fitted uponthe shaft above and adapted to engage the upper side of said disk and its flange encircling said disk, and a coiled spring mounted upon said shaft between the underside of the frame and the lower washer and disk and serving to hold the washers in engagement with the slotted disks upon both sides of the frame.

2. In a motor for talking machines and the like, a frame including an upper and a lower member, a motor driven shaft mounted in said frame and projecting through the upper member thereof and provided with a circumferential groove adj acent to the underside of said upper member, a slotted disk fitted in said groove, a flanged washer fitted upon said shaft above said disk with its flange encircling the disk,

- said motor shaft adapted to be stepped into the lower member of the frame to support v said washer in engagement with the underside of the upper member of the frame and in engagement with the disks to lock the disk in place, a brake disk operated by said motor driven shaft, a brake shaft carrying a brake shoe at its lower end to engage the brake disk and rotatably mounted in the upper member of the motor frame and projecting above said frame and provided with r a circumferential groove adjacent to the upper side of said frame, a slotted disk fitted in said groove, a flanged washer fitted upon the shaft and arranged between said disk and the upper side of the frame and its flange encircling said disk to hold said disk in place, a circumferential groove in said brake shaft below the frame, a slotted disk fitted in said groove, a flanged washer fitted upon the shaft above and adapted to engage the upper side of said disk and its flange encircling the disk, and a coiled spring mounted upon said brake shaft between the underside of the frame and the lower washer and disk and serving to hold the washers in engagement with the slotted disks upon both sides of the frame.

-This specification signed and witnessed this 1st day of February, 1918.

ANTHONY VASSELLI.

Witnesses:

ELIZABETH M. BALLING, NORMAN E. ZUsI. 

